The fatigue data for a steel alloy are given as follows: a) Make an S—N plot (stress amplitude versus logarithm cycles to failure) using these data. b) What is the fatigue limit for this alloy? c) Determine fatigue lifetimes at stress amplitudes of 415 MPa (60,000 psi) and 275 MPa (40,000 psi). d) Estimate fatigue strengths at 2 × 104 and 6 × 105 cycles.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.